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Optical device for producing a minute light beam

  • US 3,947,093 A
  • Filed: 06/26/1974
  • Issued: 03/30/1976
  • Est. Priority Date: 06/28/1973
  • Status: Expired due to Term
First Claim
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1. An optical device for producing a minute beam, comprising:

  • means for producing a beam;

    means for forming the beam produced by said beam producing means into a beam of an oval annular cross-section;

    means for condensing the oval annular beam formed by said beam forming means, onto a focal plane thereof to form a linear image thereon having a substantially uniform distribution of light energy along its length.

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